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Precise UE positioning in UMTS using cumulative virtual blanking

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2 Author(s)
Duffett-Smith, P.J. ; Cambridge Positioning Syst. Ltd., UK ; Macnaughtan, M.D.

The current observed time difference of arrival technique for finding the position of a mobile in a UMTS network suffers from a severe near-far problem when the UE is close to a node B. We describe a new technique, called cumulative virtual blanking, for overcoming this problem efficiently, without disrupting the normal operation of the network. Early results from a network-based trial indicate positioning accuracy of the order of 20 m in a rural environment.

Published in:

3G Mobile Communication Technologies, 2002. Third International Conference on (Conf. Publ. No. 489)

Date of Conference:

8-10 May 2002